2014-09-03 10:39 GMT+02:00 Dong Aisheng <dongas86@xxxxxxxxx>: > On Wed, Sep 3, 2014 at 4:25 PM, Jean-Michel Hautbois > <jhautbois@xxxxxxxxx> wrote: >> 2014-09-03 10:15 GMT+02:00 Dong Aisheng <dongas86@xxxxxxxxx>: >>> Hi JM, >> >> Hi Dong, >> >>> On Tue, Sep 2, 2014 at 11:10 PM, Jean-Michel Hautbois >>> <jhautbois@xxxxxxxxx> wrote: >>>> 2014-09-02 11:20 GMT+02:00 Jean-Michel Hautbois >>>> <jean-michel.hautbois@xxxxxxxxxxx>: >>>>> Hi there, >>>>> >>>>> I start a new thread, as I have done lots of test and this will be clearer. >>>>> I have problems reading and writing eMMC on my i.MX6 board with 3.17-rc3. >>>>> Sometimes I don't have read errors explicitly in dmesg, but fdisk has >>>>> no effects. >>>>> I activated MMC debug in my config file, and here is an extract of >>>>> mmc0 register dump and all mmc1 part. >>>>> On Freescale kernel, I confirm it works well with the same board and >>>>> sample, I can write a partition on mmc1. >>>> >>> >>> My iMX6Q SabreSD board seems ok. >>> What board did you use? >>> What reading/writing problems did you meet? >>> I did not see errors in your log. >>> Can you paste the error log? >> >> This is a custom board. >> You are right, activating debug seems to make the problem disappear... >> I have CRC errors and my CMD signal is quite bad when this is happening. >> I asked an HW engineer to look at this. >> >> I also double checked the pads, and added the >> MX6QDL_PAD_NANDF_ALE__SD4_RESET pad, but the reset signal is always >> down when doing this, when it should go down then up... >> > > The sdhci-esdhc-imx driver does not implement hw_reset support via > eMMC reset pin. OK, that is what I thought, let's add it then :) ? JM -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
